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                  <p class="p_Heading1"><span class="f_Heading1">Boundary</span></p>



  
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                <p class="p_TextIndentedL2"><img src="d_boundary.png" width="80" height="79" border="0" alt="d_Boundary"><span class="f_TextIndentedL2"> &nbsp; or&nbsp;&nbsp; <img src="d_boundary2.png" width="74" height="80" border="0" alt="d_boundary2"></span></p>
<p class="p_BodyText"><span class="f_BodyText">A </span><span class="f_BodyText" style="font-style: italic;">Boundary</span><span class="f_BodyText"> is a stereotyped <a href="object.htm">Object</a> that models some system boundary, typically a user interface screen. You can also create a Boundary as a stereotyped <a href="class.htm">Class</a>. See the </span><span class="f_BodyText" style="font-style: italic;"><a href="createaboundary.htm">Create a Boundary</a></span><span class="f_BodyText"> topic.</span></p>
<p class="p_BodyText"><span class="f_BodyText">A Boundary is used in the conceptual phase to capture users interacting with the system at a screen level (or some other boundary interface type). It is often used in <a href="sequencediagram.htm">Sequence</a> and </span><span class="f_BodyText" style="font-style: italic;">Robustness</span><span class="f_BodyText"> (<a href="analysisdiagram.htm">Analysis</a>) diagrams. It is the </span><span class="f_BodyText" style="font-style: italic;">View</span><span class="f_BodyText"> in the </span><span class="f_BodyText" style="font-style: italic;"><a href="createaboundary.htm">Model-View-Controller</a></span><span class="f_BodyText"> pattern.</span></p>
<p class="p_BodyText"><span class="f_BodyText">&nbsp;</span></p>
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<td valign="bottom" width="955" bgcolor="#efeff7" style="width:955px; background-color:#efeff7;"><p class="p_TiporNote" style="border-top: none; border-right: none; border-left: none;"><span class="f_TiporNote">Tip:</span></p>
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<td width="955" bgcolor="#f7f7ff" style="width:955px; background-color:#f7f7ff;"><p class="p_TiporNoteText"><span class="f_TiporNoteText">Use Boundary elements in analysis to capture user interactions, screen flows and element interactions (or 'collaborations').</span></p>
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<p class="p_SubHeadingL1"><span class="f_SubHeadingL1">Toolbox Icon</span></p>
<p class="p_TextIndentedL2"><img src="e_boundary.png" width="168" height="21" border="0" alt="e_Boundary"><span class="f_TextIndentedL2">  or&nbsp; </span><img src="e_boundary2.png" width="158" height="22" border="0" alt="e_boundary2"></p>




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